/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.configuration;

import proguard.classfile.*;
import proguard.classfile.constant.Constant;
import proguard.classfile.editor.*;
import proguard.classfile.instruction.Instruction;
import proguard.classfile.util.*;
import proguard.optimize.peephole.InstructionSequenceReplacer;

import static proguard.optimize.peephole.InstructionSequenceReplacer.catch_;

/**
 * This class contains a set of instruction sequences for accessing class information via reflection, and replacement
 * instructions that add logging information on the reflection that is used.
 *
 * @author Johan Leys
 */
public class ConfigurationLoggingInstructionSequenceConstants {
    private static String LOGGER_CLASS_NAME = ClassUtil.internalClassName(ConfigurationLogger.class.getName());

    // Exceptions classes.
    public static final String NAME_CLASS_NOT_FOUND_EXCEPTION = "java/lang/ClassNotFoundException";
    public static final String NAME_NO_SUCH_FIELD_EXCEPTION = "java/lang/NoSuchFieldException";
    public static final String NAME_NO_SUCH_METHOD_EXCEPTION = "java/lang/NoSuchMethodException";
    public static final String NAME_RUNTIME_EXCEPTION = "java/lang/RuntimeException";
    public static final String NAME_UNSATISFIED_LINK_ERROR = "java/lang/UnsatisfiedLinkError";
    public static final String NAME_IO_EXCEPTION = "java/io/IOException";

    // Matched constants.
    public static final int CLASS_NAME = 0x30000000;
    public static final int LOCAL_VARIABLE_INDEX_1 = 0x30000001;
    public static final int LOCAL_VARIABLE_INDEX_2 = 0x30000002;
    public static final int LOCAL_VARIABLE_INDEX_3 = 0x30000003;

    public static final int CONSTANT_INDEX = InstructionSequenceMatcher.X;
    public static final int ACCESS_MODE = InstructionSequenceMatcher.Y;

    public final Instruction[][][] RESOURCE;
    public final Constant[] CONSTANTS;

    // Labels.
    private final InstructionSequenceReplacer.Label TRY_START = InstructionSequenceReplacer.label();
    private final InstructionSequenceReplacer.Label TRY_END = InstructionSequenceReplacer.label();
    private final InstructionSequenceReplacer.Label CATCH_END = InstructionSequenceReplacer.label();

    private final InstructionSequenceReplacer.Label CLASS_NOT_FOUND_EXCEPTION;
    private final InstructionSequenceReplacer.Label NO_SUCH_METHOD_EXCEPTION;
    private final InstructionSequenceReplacer.Label NO_SUCH_FIELD_EXCEPTION;
    private final InstructionSequenceReplacer.Label IO_EXCEPTION;
    private final InstructionSequenceReplacer.Label RUNTIME_EXCEPTION;
    private final InstructionSequenceReplacer.Label UNSATISFIED_LINK_ERROR;

    /**
     * Creates a new instance of ResourceIdInstructionSequenceConstants, with constants that reference classes from the
     * given class pools.
     */
    public ConfigurationLoggingInstructionSequenceConstants(ClassPool programClassPool, ClassPool libraryClassPool) {
        InstructionSequenceBuilder ____ = new InstructionSequenceBuilder(programClassPool, libraryClassPool);

        ConstantPoolEditor constantPoolEditor = ____.getConstantPoolEditor();

        CLASS_NOT_FOUND_EXCEPTION = catch_(TRY_START.offset(), TRY_END.offset(),
            constantPoolEditor.addClassConstant(NAME_CLASS_NOT_FOUND_EXCEPTION, null));
        NO_SUCH_METHOD_EXCEPTION = catch_(TRY_START.offset(), TRY_END.offset(),
            constantPoolEditor.addClassConstant(NAME_NO_SUCH_METHOD_EXCEPTION, null));
        NO_SUCH_FIELD_EXCEPTION = catch_(TRY_START.offset(), TRY_END.offset(),
            constantPoolEditor.addClassConstant(NAME_NO_SUCH_FIELD_EXCEPTION, null));
        IO_EXCEPTION =
            catch_(TRY_START.offset(), TRY_END.offset(), constantPoolEditor.addClassConstant(NAME_IO_EXCEPTION, null));
        RUNTIME_EXCEPTION = catch_(TRY_START.offset(), TRY_END.offset(),
            constantPoolEditor.addClassConstant(NAME_RUNTIME_EXCEPTION, null));
        UNSATISFIED_LINK_ERROR = catch_(TRY_START.offset(), TRY_END.offset(),
            constantPoolEditor.addClassConstant(NAME_UNSATISFIED_LINK_ERROR, null));

        RESOURCE = new Instruction[][][] {
            // Classes.
            {____.invokestatic("java/lang/Class", "forName", "(Ljava/lang/String;)Ljava/lang/Class;").__(),

                ____.dup().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokestatic("java/lang/Class", "forName", "(Ljava/lang/String;)Ljava/lang/Class;").label(TRY_END)
                    .goto_(CATCH_END.offset()).catch_(CLASS_NOT_FOUND_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1)
                    .invokestatic(LOGGER_CLASS_NAME, "logForName", "(Ljava/lang/String;Ljava/lang/String;)V").athrow()
                    .label(CATCH_END).__()},
            {____.invokestatic("java/lang/Class", "forName",
                "(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;").__(),

                ____.dup_x2().pop().dup_x2().pop().dup_x2().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokestatic("java/lang/Class", "forName",
                        "(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(CLASS_NOT_FOUND_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1)
                    .invokestatic(LOGGER_CLASS_NAME, "logForName", "(Ljava/lang/String;Ljava/lang/String;)V").athrow()
                    .label(CATCH_END).__()},
            {____.invokevirtual("java/lang/ClassLoader", "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;").__(),

                ____.dup().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokevirtual("java/lang/ClassLoader", "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(CLASS_NOT_FOUND_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1)
                    .invokestatic(LOGGER_CLASS_NAME, "logLoadClass", "(Ljava/lang/String;Ljava/lang/String;)V").athrow()
                    .label(CATCH_END).__()},

            // Constructors.
            {____.invokevirtual("java/lang/Class", "getDeclaredConstructor",
                "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;").__(),

                ____.dup_x1().astore(LOCAL_VARIABLE_INDEX_2).dup_x1().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokevirtual("java/lang/Class", "getDeclaredConstructor",
                        "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(NO_SUCH_METHOD_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1).aload(LOCAL_VARIABLE_INDEX_2)
                    .invokestatic(LOGGER_CLASS_NAME, "logGetDeclaredConstructor",
                        "(Ljava/lang/String;Ljava/lang/Class;[Ljava/lang/Class;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokevirtual("java/lang/Class", "getConstructor",
                "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;").__(),

                ____.dup_x1().astore(LOCAL_VARIABLE_INDEX_2).dup_x1().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokevirtual("java/lang/Class", "getConstructor",
                        "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(NO_SUCH_METHOD_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1).aload(LOCAL_VARIABLE_INDEX_2)
                    .invokestatic(LOGGER_CLASS_NAME, "logGetConstructor",
                        "(Ljava/lang/String;Ljava/lang/Class;[Ljava/lang/Class;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokevirtual("java/lang/Class", "getDeclaredConstructors", "()[Ljava/lang/reflect/Constructor;")
                .__(),

                ____.dup().ldc_(CLASS_NAME).swap()
                    .invokestatic(LOGGER_CLASS_NAME, "logGetDeclaredConstructors",
                        "(Ljava/lang/String;Ljava/lang/Class;)V")
                    .invokevirtual("java/lang/Class", "getDeclaredConstructors", "()[Ljava/lang/reflect/Constructor;")
                    .__()},
            {____.invokevirtual("java/lang/Class", "getConstructors", "()[Ljava/lang/reflect/Constructor;").__(),

                ____.dup().ldc_(CLASS_NAME).swap()
                    .invokestatic(LOGGER_CLASS_NAME, "logGetConstructors", "(Ljava/lang/String;Ljava/lang/Class;)V")
                    .invokevirtual("java/lang/Class", "getConstructors", "()[Ljava/lang/reflect/Constructor;").__()},

            // Methods.

            {____.invokevirtual("java/lang/Class", "getDeclaredMethod",
                "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;").__(),

                ____.dup_x2().astore(LOCAL_VARIABLE_INDEX_3).dup_x2().astore(LOCAL_VARIABLE_INDEX_2).dup_x2()
                    .astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokevirtual("java/lang/Class", "getDeclaredMethod",
                        "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(NO_SUCH_METHOD_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1).aload(LOCAL_VARIABLE_INDEX_2).aload(LOCAL_VARIABLE_INDEX_3)
                    .invokestatic(LOGGER_CLASS_NAME, "logGetDeclaredMethod",
                        "(Ljava/lang/String;Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokevirtual("java/lang/Class", "getMethod",
                "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;").__(),

                ____.dup_x2().astore(LOCAL_VARIABLE_INDEX_3).dup_x2().astore(LOCAL_VARIABLE_INDEX_2).dup_x2()
                    .astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokevirtual("java/lang/Class", "getMethod",
                        "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(NO_SUCH_METHOD_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1).aload(LOCAL_VARIABLE_INDEX_2).aload(LOCAL_VARIABLE_INDEX_3)
                    .invokestatic(LOGGER_CLASS_NAME, "logGetMethod",
                        "(Ljava/lang/String;Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokevirtual("java/lang/Class", "getDeclaredMethods", "()[Ljava/lang/reflect/Method;").__(),

                ____.dup().ldc_(CLASS_NAME).swap()
                    .invokestatic(LOGGER_CLASS_NAME, "logGetDeclaredMethods", "(Ljava/lang/String;Ljava/lang/Class;)V")
                    .invokevirtual("java/lang/Class", "getDeclaredMethods", "()[Ljava/lang/reflect/Method;").__()},
            {____.invokevirtual("java/lang/Class", "getMethods", "()[Ljava/lang/reflect/Method;").__(),

                ____.dup().ldc_(CLASS_NAME).swap()
                    .invokestatic(LOGGER_CLASS_NAME, "logGetMethods", "(Ljava/lang/String;Ljava/lang/Class;)V")
                    .invokevirtual("java/lang/Class", "getMethods", "()[Ljava/lang/reflect/Method;").__()},

            // Fields.

            {____.invokevirtual("java/lang/Class", "getDeclaredField", "(Ljava/lang/String;)Ljava/lang/reflect/Field;")
                .__(),

                ____.dup_x1().astore(LOCAL_VARIABLE_INDEX_2).dup_x1().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokevirtual("java/lang/Class", "getDeclaredField",
                        "(Ljava/lang/String;)Ljava/lang/reflect/Field;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(NO_SUCH_FIELD_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1).aload(LOCAL_VARIABLE_INDEX_2)
                    .invokestatic(LOGGER_CLASS_NAME, "logGetDeclaredField",
                        "(Ljava/lang/String;Ljava/lang/Class;Ljava/lang/String;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokevirtual("java/lang/Class", "getField", "(Ljava/lang/String;)Ljava/lang/reflect/Field;").__(),

                ____.dup_x1().astore(LOCAL_VARIABLE_INDEX_2).dup_x1().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokevirtual("java/lang/Class", "getField", "(Ljava/lang/String;)Ljava/lang/reflect/Field;")
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(NO_SUCH_FIELD_EXCEPTION).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1).aload(LOCAL_VARIABLE_INDEX_2)
                    .invokestatic(LOGGER_CLASS_NAME, "logGetField",
                        "(Ljava/lang/String;Ljava/lang/Class;Ljava/lang/String;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokevirtual("java/lang/Class", "getDeclaredFields", "()[Ljava/lang/reflect/Field;").__(),

                ____.dup().ldc_(CLASS_NAME).swap()
                    .invokestatic(LOGGER_CLASS_NAME, "logGetDeclaredFields", "(Ljava/lang/String;Ljava/lang/Class;)V")
                    .invokevirtual("java/lang/Class", "getDeclaredFields", "()[Ljava/lang/reflect/Field;").__()},
            {____.invokevirtual("java/lang/Class", "getFields", "()[Ljava/lang/reflect/Field;").__(),

                ____.dup().ldc_(CLASS_NAME).swap()
                    .invokestatic(LOGGER_CLASS_NAME, "logGetFields", "(Ljava/lang/String;Ljava/lang/Class;)V")
                    .invokevirtual("java/lang/Class", "getFields", "()[Ljava/lang/reflect/Field;").__()},

            // Resource files.

            // System.loadLibrary(String)
            {____.ldc_(CONSTANT_INDEX)
                .invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                    ClassConstants.METHOD_TYPE_LOAD_LIBRARY)
                .__(),

                ____.ldc_(CONSTANT_INDEX).label(TRY_START)
                    .invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                        ClassConstants.METHOD_TYPE_LOAD_LIBRARY)
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(UNSATISFIED_LINK_ERROR).ldc_(CLASS_NAME)
                    .ldc_(CONSTANT_INDEX)
                    .invokestatic(LOGGER_CLASS_NAME, "logLoadLibrary", "(Ljava/lang/String;Ljava/lang/String;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                ClassConstants.METHOD_TYPE_LOAD_LIBRARY).__(),

                ____.dup().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                        ClassConstants.METHOD_TYPE_LOAD_LIBRARY)
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(UNSATISFIED_LINK_ERROR).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1)
                    .invokestatic(LOGGER_CLASS_NAME, "logLoadLibrary", "(Ljava/lang/String;Ljava/lang/String;)V")
                    .athrow().label(CATCH_END).__()},

            // System.load(String)
            {____.ldc_(CONSTANT_INDEX)
                .invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD,
                    ClassConstants.METHOD_TYPE_LOAD)
                .__(),

                ____.ldc_(CONSTANT_INDEX).label(TRY_START)
                    .invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD,
                        ClassConstants.METHOD_TYPE_LOAD)
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(UNSATISFIED_LINK_ERROR).ldc_(CLASS_NAME)
                    .ldc_(CONSTANT_INDEX)
                    .invokestatic(LOGGER_CLASS_NAME, "logLoad", "(Ljava/lang/String;Ljava/lang/String;)V").athrow()
                    .label(CATCH_END).__()},
            {____.invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD,
                ClassConstants.METHOD_TYPE_LOAD).__(),

                ____.dup().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokestatic(ClassConstants.NAME_JAVA_LANG_SYSTEM, ClassConstants.METHOD_NAME_LOAD,
                        ClassConstants.METHOD_TYPE_LOAD)
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(UNSATISFIED_LINK_ERROR).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1)
                    .invokestatic(LOGGER_CLASS_NAME, "logLoad", "(Ljava/lang/String;Ljava/lang/String;)V").athrow()
                    .label(CATCH_END).__()},

            // Runtime.loadLibrary(String)
            {____.ldc_(CONSTANT_INDEX)
                .invokestatic(ClassConstants.NAME_JAVA_LANG_RUNTIME, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                    ClassConstants.METHOD_TYPE_LOAD_LIBRARY)
                .__(),

                ____.ldc_(CONSTANT_INDEX).label(TRY_START)
                    .invokestatic(ClassConstants.NAME_JAVA_LANG_RUNTIME, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                        ClassConstants.METHOD_TYPE_LOAD_LIBRARY)
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(UNSATISFIED_LINK_ERROR).ldc_(CLASS_NAME)
                    .ldc_(CONSTANT_INDEX)
                    .invokestatic(LOGGER_CLASS_NAME, "logLoadLibrary", "(Ljava/lang/String;Ljava/lang/String;)V")
                    .athrow().label(CATCH_END).__()},
            {____.invokestatic(ClassConstants.NAME_JAVA_LANG_RUNTIME, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                ClassConstants.METHOD_TYPE_LOAD_LIBRARY).__(),

                ____.dup().astore(LOCAL_VARIABLE_INDEX_1).label(TRY_START)
                    .invokestatic(ClassConstants.NAME_JAVA_LANG_RUNTIME, ClassConstants.METHOD_NAME_LOAD_LIBRARY,
                        ClassConstants.METHOD_TYPE_LOAD_LIBRARY)
                    .label(TRY_END).goto_(CATCH_END.offset()).catch_(UNSATISFIED_LINK_ERROR).ldc_(CLASS_NAME)
                    .aload(LOCAL_VARIABLE_INDEX_1)
                    .invokestatic(LOGGER_CLASS_NAME, "logLoadLibrary", "(Ljava/lang/String;Ljava/lang/String;)V")
                    .athrow().label(CATCH_END).__()},};

        CONSTANTS = ____.constants();
    }
}
